Craig Mayer, Nick WIlliams, Vojtech Huser
Lister Hill National Center for Biomedical Communications, National Library of Medicine, NIH, Bethesda, MD

See the full regCTG repository at https://github.com/lhncbc/CRI/tree/master/regCTG

To return to the list of conditions and links to their rpeorts go to https://lhncbc.github.io/CRI/regCTG/regCTG-condition_report_links.html


Study Counts

Type Study_count
Total_Studies 3199
interventional 2684
Observational 472
Registry 43

Studies over Time

```

Interventional Trials

Intervention Type

intervention_type Study_Count
Drug 1045
Radiation 193
Procedure 155
Behavioral 126
Other 124
Drug|placebo 122
Device 119
Biological 102
Drug|Radiation 79
Drug|Other 63
Drug|Procedure 63
Biological|Drug 56
Diagnostic Test 38
Dietary Supplement 28
Dietary Supplement|placebo 22
Other|Procedure 18
Drug|Procedure|Radiation 16
Procedure|Radiation 15
Behavioral|Other 14
Device|Drug 14
Device|Procedure 14
Drug|Other|Procedure 14
Other|Procedure|Radiation 14
Other|Radiation 14
Drug|Other|Radiation 13
Biological|Drug|Other 11
Dietary Supplement|Drug 10
Biological|Other 9
Biological|placebo 9
Drug|Other|placebo 8
Biological|Drug|placebo 6
Device|Other 6
Behavioral|Drug 5
Behavioral|Radiation 5
Biological|Drug|Procedure 5
Biological|Procedure 5
Biological|Radiation 5
Diagnostic Test|Drug 5
Dietary Supplement|Other 5
Drug|placebo|Radiation 5
Genetic 5
Biological|Other|Procedure 4
Device|Radiation 4
Dietary Supplement|Other|Procedure 4
Behavioral|Dietary Supplement|Other 3
Behavioral|Other|Procedure 3
Biological|Drug|Radiation 3
Combination Product 3
Combination Product|Drug 3
Dietary Supplement|Drug|placebo 3
Dietary Supplement|Procedure 3
Drug|Other|placebo|Procedure 3
Behavioral|Drug|Other|placebo 2
Behavioral|Procedure 2
Biological|Device 2
Biological|Device|Other|Procedure 2
Biological|Drug|Genetic|Other 2
Biological|Drug|Other|placebo 2
Biological|Drug|Other|Procedure 2
Device|Other|Procedure 2
Dietary Supplement|Drug|Other|placebo 2
Dietary Supplement|Drug|Radiation 2
Drug|Genetic|Other 2
Drug|Other|Procedure|Radiation 2
Behavioral|Device 1
Behavioral|Device|Other|Procedure|Radiation 1
Behavioral|Dietary Supplement|Drug|Other|Procedure 1
Behavioral|Dietary Supplement|Other|placebo 1
Behavioral|Dietary Supplement|Other|Procedure 1
Behavioral|Dietary Supplement|Procedure 1
Behavioral|Genetic 1
Behavioral|Genetic|Other|Procedure 1
Behavioral|Other|Procedure|Radiation 1
Behavioral|placebo 1
Biological|Device|Drug 1
Biological|Device|Drug|Procedure 1
Biological|Drug|placebo|Procedure 1
Biological|Other|placebo 1
Biological|Other|Radiation 1
Combination Product|Procedure 1
Combination Product|Radiation 1
Device|Diagnostic Test|Other 1
Device|Diagnostic Test|Other|Procedure 1
Device|Drug|Other 1
Device|Drug|Procedure 1
Device|Drug|Radiation 1
Device|Procedure|Radiation 1
Diagnostic Test|Drug|Other|Procedure 1
Diagnostic Test|Other 1
Diagnostic Test|Other|placebo 1
Diagnostic Test|Other|Procedure 1
Diagnostic Test|Radiation 1
Dietary Supplement|Drug|Other|placebo|Procedure 1
Dietary Supplement|Drug|Other|Procedure 1
Dietary Supplement|Drug|Procedure 1
Dietary Supplement|Other|placebo|Procedure 1
Dietary Supplement|placebo|Procedure 1
Dietary Supplement|Radiation 1
Drug|Genetic|Other|Procedure 1
Drug|Genetic|Procedure 1
Drug|Genetic|Radiation 1
Drug|placebo|Procedure 1
Genetic|Other|Procedure 1

Count of Studies by Intervention (normalized and mapped)

Interventions over Time

Weekly studies for each intervention

Studies by Country

Country Study_Count
United States 1416
Canada 201
NA 90
France 81
United Kingdom 72
United States|Canada 61
China 49
Denmark 41
Germany 40
Italy 28
Japan 28
Netherlands 28
Korea, Republic of 27
Finland 25
Australia 22
Sweden 17
Switzerland 17
Brazil 16
Norway 16
Belgium 15
Spain 14
United States|United Kingdom 12
Israel 11
Hong Kong 7
United States|Puerto Rico 7
Czechia 6
Russian Federation 5
Taiwan 5
Turkey 5
Austria 4
Belgium|Netherlands 4
India 4
Ireland 4
Portugal 4
Singapore 4
Greece 3
Poland 3
South Africa 3
Australia|New Zealand 2
Austria|Germany 2
Belgium|France 2
Canada|United States 2
Czech Republic|United Kingdom 2
Denmark|Finland|Norway|Sweden 2
Germany|Switzerland 2
Iran, Islamic Republic of 2
Moldova, Republic of 2
Saudi Arabia 2
Switzerland|United Kingdom 2
United States|Australia 2
United States|Australia|Belgium|Canada|Denmark|France|Germany|Ireland|Israel|Italy|Spain|United Kingdom 2
United States|Australia|Canada 2
United States|Canada|Czech Republic|Germany|Hungary|Mexico|Netherlands|Puerto Rico|Romania|Russian Federation|Ukraine|United Kingdom 2
United States|Canada|Puerto Rico 2
United States|Canada|Spain|United Kingdom 2
United States|Canada|Switzerland 2
United States|Finland 2
United States|Mexico 2
United States|Netherlands|United Kingdom 2
United States|South Africa 2
United States|Spain 2
Argentina|Australia|Japan|United States|Belgium|Canada|Chile|Denmark|Finland|France|Germany|Israel|Italy|Korea, Republic of|Netherlands|New Zealand|Poland|Romania|Russian Federation|Slovakia|Spain|Sweden|Taiwan|United Kingdom 1
Argentina|Austria|Belgium|Brazil|Czechia|France|Hungary|Israel|Italy|Japan|Latvia|Lithuania|Panama|Peru|Poland|Russian Federation|South Africa|Spain|Ukraine 1
Argentina|United States|Belgium|Brazil|Canada|China|Czechia|France|Germany|Israel|Korea, Republic of|Malaysia|Mexico|Netherlands|Poland|Romania|Russian Federation|Spain|Sweden|Taiwan|Turkey|Ukraine|United Kingdom 1
Australia|Austria|Belgium|Bosnia and Herzegovina|Bulgaria|Canada|Croatia|Czech Republic|Denmark|Finland|Hungary|India|Ireland|Italy|Kazakhstan|Luxembourg|Malaysia|Mexico|Philippines|Poland|Portugal|Romania|Serbia|Singapore|Slovakia|Spain|Sweden|Taiwan|United Kingdom 1
Australia|Austria|Belgium|Czech Republic|Germany|Hungary|Ireland|Israel|Italy|Mexico|Netherlands|Poland|Portugal|South Africa|Spain|United Kingdom 1
Australia|Belgium|Canada|Chile|Czech Republic|France|Italy|Mexico|Netherlands|Poland|Portugal|Spain|United Kingdom 1
Australia|Belgium|Germany|Italy|Netherlands|Norway|Spain|Switzerland 1
Australia|Brazil|China|Korea, Republic of|Kuwait|Lebanon|New Zealand|Saudi Arabia|Taiwan|Thailand 1
Australia|Canada|France 1
Australia|Georgia|New Zealand 1
Australia|Hong Kong|Singapore 1
Australia|United States|Austria|Belgium|Canada|France|Germany|Ireland|Italy|Netherlands|Puerto Rico|Spain|Sweden|United Kingdom 1
Australia|United States|Belgium|Canada|France|Germany|Greece|Netherlands|Spain|Sweden|United Kingdom 1
Austria|Belgium|Czechia|France|Germany|Greece|Iceland|Ireland|Italy|Netherlands|Norway|Spain|United Kingdom 1
Austria|Belgium|Czechia|France|Germany|Greece|Italy|Netherlands|Norway|Poland|Russian Federation|Spain|Sweden|Switzerland|Turkey|United Kingdom 1
Austria|Belgium|Denmark|France|Israel|Italy|Netherlands|Poland|Portugal|Spain|United Kingdom 1
Austria|France|Netherlands|United Kingdom 1
Austria|Germany|Switzerland 1
Belgium|Brazil|Romania|Argentina|Australia|Bulgaria|Canada|Chile|China|Colombia|Czechia|Denmark|Finland|France|Germany|Hungary|Israel|Japan|Korea, Republic of|Malaysia|Mexico|Netherlands|New Zealand|Poland|Portugal|Russian Federation|Slovakia|South Africa|Spain|Sweden|Turkey|Ukraine|United Kingdom 1
Belgium|Canada|Denmark|France|Ireland|Italy|Norway|Poland|Spain|Switzerland|United Kingdom 1
Belgium|Cyprus|Czech Republic|France|Ireland|Italy|Luxembourg|Netherlands|Poland|Spain|United Kingdom 1
Belgium|Czech Republic|Finland|France|Germany|Hungary|Italy|Russian Federation|Slovakia|Spain 1
Belgium|Czechia|Denmark|Germany 1
Belgium|Czechia|Germany|Hungary|Italy|Poland|Spain 1
Belgium|Denmark|Finland|Italy|Norway|Portugal|Sweden|Turkey 1
Belgium|Denmark|France|Germany|Italy|Spain|Switzerland|United Kingdom 1
Belgium|Denmark|France|Italy|Latvia|Lithuania|Netherlands|Romania|Spain|United Kingdom 1
Belgium|Denmark|Italy|Netherlands|Poland|Portugal|Russian Federation|Switzerland|United Kingdom 1
Belgium|Finland|France|Germany|Italy|Netherlands|Spain|Sweden|Switzerland|United Kingdom 1
Belgium|Finland|France|Germany|Montenegro|Netherlands|Romania|Russian Federation|Serbia|United Kingdom 1
Belgium|Finland|Israel|Netherlands|Portugal|Spain|Switzerland|Turkey 1
Belgium|France|Germany|Israel|Spain|Switzerland 1
Belgium|France|Germany|Italy|Netherlands|Spain 1
Belgium|France|Germany|Spain|United Kingdom 1
Belgium|France|Ireland|Italy|Romania|Spain|Switzerland 1
Belgium|France|Italy|Portugal|Spain|Sweden|Turkey 1
Belgium|Germany 1
Belgium|Germany|Hungary|Netherlands|Poland|Romania|Russian Federation|South Africa 1
Belgium|Germany|Hungary|Netherlands|Romania|Russian Federation|South Africa 1
Belgium|Germany|Hungary|United Kingdom 1
Belgium|Germany|Switzerland 1
Belgium|Israel|Malta|Netherlands|Russian Federation|Turkey|United Kingdom 1
Belgium|Italy|Slovakia 1
Belgium|Luxembourg 1
Belgium|Spain 1
Belgium|United States|Argentina|Australia|Austria|Brazil|Canada|Chile|China|Czechia|France|Germany|Hong Kong|Israel|Italy|Korea, Republic of|Mexico|New Zealand|Poland|Romania|Russian Federation|Singapore|Spain|Taiwan|Turkey|United Kingdom 1
Belgium|United States|Australia|Austria|Canada|China|Czechia|Denmark|France|Germany|Greece|Hungary|Italy|Japan|Korea, Republic of|Poland|Russian Federation|Spain|Switzerland|Taiwan|United Kingdom 1
Brazil|Germany|Hungary|South Africa|Sweden 1
Brazil|United States|Argentina|Australia|Austria|Belgium|Canada|Chile|Colombia|Czech Republic|Denmark|France|Germany|Greece|Hungary|Ireland|Israel|Italy|Mexico|Netherlands|Peru|Poland|Puerto Rico|Romania|Russian Federation|Spain|United Kingdom 1
Brazil|United States|Argentina|Australia|Austria|Canada|China|Denmark|France|Germany|Israel|Italy|Japan|Korea, Republic of|Netherlands|Norway|Spain|Sweden|Taiwan|Turkey|United Kingdom 1
Bulgaria|France|Latvia|Poland|Romania 1
Canada|Belgium|Czech Republic|Denmark|Finland|France|Germany|Ireland|Israel|Italy|Mexico|Netherlands|Norway|Poland|Russian Federation|Spain|Sweden|Switzerland|United Kingdom 1
Canada|China|Korea, Republic of|United Kingdom 1
Canada|Finland|Lithuania 1
Canada|France|India|Italy|Malaysia|Russian Federation 1
Canada|France|United Kingdom 1
Canada|Georgia 1
Canada|Israel|Italy|Singapore|United Kingdom 1
Canada|United Kingdom 1
Canada|United States|Argentina|Australia|Belgium|Brazil|France|Germany|Japan|Korea, Republic of|Mexico|Netherlands|Russian Federation|South Africa|Spain|United Kingdom 1
Canada|United States|Australia|Austria|Belarus|Belgium|Brazil|Bulgaria|Chile|Colombia|Czech Republic|Finland|France|Germany|Greece|Hong Kong|Ireland|Israel|Italy|Japan|Latvia|Lithuania|Mexico|Netherlands|New Zealand|Peru|Poland|Portugal|Puerto Rico|Romania|Russian Federation|Singapore|Slovakia|South Africa|Spain|Sweden|Switzerland|Taiwan|Ukraine|United Kingdom 1
Canada|United States|Australia|Austria|Brazil|Denmark|Finland|France|Italy|Korea, Republic of|Netherlands|Poland|Slovakia|Spain|Sweden|Taiwan|United Kingdom 1
China|Czechia|United States|Australia|Belgium|Brazil|Canada|Chile|France|Germany|Italy|Japan|Korea, Republic of|Netherlands|Slovakia|Spain|Turkey|United Kingdom 1
China|Hong Kong|Korea, Republic of|Taiwan 1
China|Malaysia|Russian Federation|Thailand 1
China|Russian Federation 1
Colombia|United States|Argentina|Australia|Belgium|Brazil|Bulgaria|Canada|Chile|China|Czech Republic|Estonia|France|Germany|Greece|India|Israel|Italy|Korea, Republic of|Latvia|Lebanon|Lithuania|Mexico|Netherlands|New Zealand|Panama|Peru|Poland|Romania|Russian Federation|Slovakia|Spain|Sweden|Taiwan|Turkey|Ukraine|United Kingdom 1
Croatia 1
Cuba 1
Cyprus 1
Czech Republic 1
Denmark|Estonia|Finland 1
Denmark|Finland|France 1
Denmark|Finland|Hungary|Norway|Romania|Russian Federation|Sweden 1
Denmark|Finland|Netherlands|Sweden 1
Denmark|Germany 1
Denmark|United Kingdom 1
Denmark|United States|Argentina|Australia|Brazil|Canada|Chile|Colombia|Czech Republic|France|Germany|Greece|Hungary|Italy|Mexico|Netherlands|Norway|Poland|Puerto Rico|Romania|Spain|Sweden|Turkey|United Kingdom 1
Egypt 1
Estonia|Finland|France|Germany|Netherlands|Russian Federation|Spain|Sweden|United Kingdom 1
Estonia|Finland|Latvia|Sweden 1
Finland|France|Germany 1
Finland|France|Latvia|United Kingdom 1
Finland|France|United Kingdom 1
Finland|Germany|Switzerland 1
Finland|Hungary 1
Finland|Ireland|Sweden 1
Finland|Norway|Sweden|United Kingdom 1
Finland|Sweden 1
Finland|United States|Australia|Belgium|Canada|Czechia|Estonia|France|Greece|Hungary|Italy|Netherlands|Poland|Spain 1
Finland|United States|Czech Republic|Estonia|France|United Kingdom 1
France|Germany|Netherlands 1
France|Germany|Switzerland 1
France|Guadeloupe 1
France|Guadeloupe|Martinique 1
France|Italy|Spain|Switzerland 1
France|Netherlands|United Kingdom 1
Georgia|Russian Federation 1
Germany|Hungary|United Kingdom 1
Germany|Italy 1
Germany|Poland 1
Germany|United States|Argentina|Australia|Brazil|Canada|China|Czechia|France|Hungary|Israel|Japan|Korea, Republic of|Mexico|Poland|Romania|Russian Federation|Spain|Sweden|Turkey|Ukraine|United Kingdom 1
Germany|United States|Belgium|Canada|France|Hungary|Israel|Italy|Korea, Republic of|Netherlands|Spain|United Kingdom 1
Greece|Spain 1
Hong Kong|Indonesia|Malaysia|Philippines|Singapore|Taiwan|Thailand|Vietnam 1
Hungary 1
Iceland 1
Ireland|Netherlands|Spain|United States|Australia|Austria|Belgium|Canada|France|Germany|Hungary|United Kingdom 1
Ireland|United Kingdom 1
Israel|United States|Argentina|Belgium|Croatia|France|Germany|Hungary|Italy|Netherlands|Peru|Poland|Russian Federation|Spain|United Kingdom 1
Italy|Spain 1
Korea, Republic of|Taiwan 1
Latvia 1
Lithuania 1
Malaysia 1
Mexico|Panama|Peru 1
Moldova, Republic of|Spain 1
Netherlands|United States|Austria|Belarus|Belgium|Bulgaria|Croatia|Czechia|Denmark|France|Germany|Hungary|Italy|Latvia|Lithuania|Poland|Portugal|Serbia|Slovakia|Spain|Sweden|United Kingdom 1
Nigeria 1
Norway|Sweden 1
Pakistan 1
Peru|United States|Argentina|Australia|Belgium|Brazil|Canada|Chile|France|Germany|Hungary|Korea, Republic of|Netherlands|Poland|Romania|Russian Federation|South Africa|Spain|Taiwan|Tunisia|Turkey|United Kingdom 1
Poland|United States|Australia|Belgium|Canada|France|Germany|Netherlands|Russian Federation|Slovakia|South Africa|Spain 1
Slovenia|United States|Australia|Austria|Belgium|Ireland|New Zealand|Spain|United Kingdom 1
South Africa|United Kingdom 1
South Africa|United States|Austria|Belgium|Germany|India|Netherlands|Poland|Russian Federation|United Kingdom 1
Sweden|Taiwan|United States|Australia|Austria|Belgium|Canada|Czechia|Denmark|Finland|France|Germany|Hungary|Israel|Japan|Korea, Republic of|Netherlands|New Zealand|Norway|Poland|Romania|Russian Federation|Slovakia|Spain|United Kingdom 1
Sweden|United Kingdom 1
Taiwan|China|Korea, Republic of|Singapore 1
United States|Argentina 1
United States|Argentina|Australia|Austria|Belarus|Belgium|Brazil|Bulgaria|Canada|Chile|Croatia|Denmark|Estonia|Finland|France|Germany|Greece|Hungary|Ireland|Italy|Japan|Latvia|Lithuania|Mexico|Netherlands|New Zealand|Norway|Poland|Portugal|Puerto Rico|Romania|Russian Federation|Slovakia|Slovenia|South Africa|Spain|Sweden|Switzerland|Tunisia|Turkey|Ukraine|United Kingdom| 1
United States|Argentina|Australia|Austria|Belarus|Belgium|Brazil|Bulgaria|Canada|Colombia|Czechia|Estonia|Finland|France|Germany|Hungary|Israel|Italy|Japan|Korea, Republic of|Latvia|Lithuania|Peru|Poland|Portugal|Romania|Russian Federation|Serbia|Slovakia|South Africa|Spain|Sweden|Taiwan|Turkey|Ukraine|United Kingdom 1
United States|Argentina|Australia|Austria|Belgium|Brazil|Canada|Chile|China|Denmark|Finland|France|Germany|Greece|Hong Kong|Italy|Korea, Republic of|Malaysia|Netherlands|New Zealand|Poland|Russian Federation|Serbia|Singapore|Slovakia|Spain|Sweden|Taiwan|Thailand|Turkey|Ukraine|United Kingdom 1
United States|Argentina|Australia|Austria|Belgium|Brazil|Canada|China|Czech Republic|Denmark|Finland|France|Germany|Hong Kong|Hungary|India|Italy|Japan|Korea, Republic of|Mexico|Netherlands|Poland|Portugal|Russian Federation|Serbia|Singapore|South Africa|Sweden|Switzerland|Taiwan|United Kingdom 1
United States|Argentina|Australia|Austria|Brazil|Canada|Chile|Colombia|France|Germany|Ireland|Israel|Italy|Japan|Korea, Republic of|Netherlands|New Zealand|Poland|Russian Federation|Spain|Taiwan|United Kingdom 1
United States|Argentina|Australia|Austria|Brazil|Canada|Chile|Colombia|France|Germany|Ireland|Israel|Italy|Japan|Korea, Republic of|Netherlands|Russian Federation|Spain|Taiwan|United Kingdom 1
United States|Argentina|Australia|Austria|Brazil|Canada|Chile|France|Germany|Ireland|Israel|Italy|Japan|Korea, Republic of|Netherlands|New Zealand|Russian Federation|Spain|Taiwan|United Kingdom 1
United States|Argentina|Australia|Belgium|Brazil|Bulgaria|Canada|China|Czechia|France|Germany|Hungary|Israel|Italy|Korea, Republic of|Malaysia|Mexico|Netherlands|Poland|Portugal|Puerto Rico|Russian Federation|South Africa|Spain|Sweden|Taiwan|Turkey|Ukraine|United Kingdom 1
United States|Argentina|Australia|Belgium|Brazil|Canada|Chile|Croatia|Czech Republic|Denmark|Estonia|France|Germany|Hong Kong|Hungary|Israel|Italy|Korea, Republic of|Netherlands|Poland|Portugal|Russian Federation|Singapore|South Africa|Spain|Sweden|Switzerland|Taiwan|Turkey|Ukraine|United Kingdom 1
United States|Argentina|Australia|Belgium|Canada|Chile|Czechia|Denmark|Finland|France|Georgia|Germany|Israel|Italy|Korea, Republic of|Moldova, Republic of|New Zealand|Poland|Russian Federation|Slovakia|South Africa|Spain|Sweden|United Kingdom 1
United States|Argentina|Australia|Belgium|Canada|Chile|Czechia|Finland|France|Germany|Hungary|Israel|Italy|Korea, Republic of|New Zealand|Singapore|Spain|Sweden|Taiwan|United Kingdom 1
United States|Argentina|Australia|Brazil|Canada|Chile|Colombia|France|Germany|Mexico|Spain 1
United States|Argentina|Australia|Brazil|Canada|China|Czechia|France|Germany|Israel|Italy|Japan|Korea, Republic of|Netherlands|Poland|Russian Federation|Spain|Taiwan|United Kingdom 1
United States|Argentina|Australia|Brazil|Canada|Czech Republic|Finland|France|Germany|Greece|Hungary|India|Ireland|Italy|Korea, Republic of|Mexico|Norway|Peru|Poland|Romania|Russian Federation|South Africa|Spain|Sweden|United Kingdom 1
United States|Argentina|Australia|Brazil|Canada|Czech Republic|Finland|France|Germany|Hungary|India|Italy|Korea, Republic of|Netherlands|Peru|Poland|Portugal|Romania|Russian Federation|Serbia|South Africa|Spain|Sweden|Switzerland|Taiwan|United Kingdom 1
United States|Argentina|Belgium|Brazil|Bulgaria|Canada|China|France|Germany|Greece|Hungary|India|Israel|Italy|Japan|Korea, Republic of|Malaysia|Mexico|Netherlands|Peru|Poland|Portugal|Romania|Russian Federation|Spain|Switzerland|Taiwan|Thailand|Turkey 1
United States|Argentina|Belgium|Brazil|Canada|Chile|Czech Republic|Denmark|Finland|France|Germany|Hungary|India|Italy|Korea, Republic of|Mexico|Netherlands|Russian Federation|Singapore|Slovakia|South Africa|Spain|Sweden|Taiwan|Turkey|United Kingdom 1
United States|Australia|Austria|Belgium|Brazil|Canada|China|Costa Rica|Denmark|France|Greece|Hungary|Ireland|Israel|Italy|Japan|Korea, Republic of|Mexico|Norway|Poland|Portugal|Russian Federation|Spain|Taiwan|Thailand|United Kingdom 1
United States|Australia|Austria|Belgium|Brazil|Canada|China|Denmark|Finland|France|Germany|Italy|Japan|Korea, Republic of|Netherlands|New Zealand|Poland|Slovakia|Spain|Sweden|Taiwan|United Kingdom 1
United States|Australia|Austria|Belgium|Brazil|France|Germany|Hungary|Italy|Korea, Republic of|Netherlands|Poland|Spain|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|Czechia|Denmark|France|Germany|Greece|Hungary|Israel|Italy|Mexico|Netherlands|Poland|Russian Federation|South Africa|Spain|Sweden|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|Denmark|Finland|France|Germany|Israel|Italy|Japan|Korea, Republic of|Lithuania|Netherlands|Poland|Russian Federation|Singapore|Slovakia|Spain|Sweden|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|France|Germany|Greece|Ireland|Italy|Netherlands|New Zealand|Poland|South Africa|Spain|Sweden|Switzerland|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|France|Germany|Greece|Ireland|Italy|Netherlands|New Zealand|Poland|South Africa|Spain|Sweden|United Kingdom 1
United States|Australia|Austria|Belgium|France|Netherlands 1
United States|Australia|Austria|Brazil|Canada|France|Germany|India|Israel|Italy|Mexico|Netherlands|Poland|Russian Federation|South Africa|Turkey|United Kingdom 1
United States|Australia|Austria|Canada|Denmark|France|Germany|Italy|Poland|Spain 1
United States|Australia|Austria|Chile|Colombia|Denmark|France|Israel|Japan|Korea, Republic of|Poland|Spain|Switzerland|Taiwan 1
United States|Australia|Belarus|Brazil|Canada|China|Czechia|Denmark|Finland|France|Germany|Israel|Italy|Japan|Mexico|Peru|Poland|Portugal|Romania|Russian Federation|Spain|Sweden|Taiwan|Turkey|Ukraine 1
United States|Australia|Belgium|Brazil|Bulgaria|Canada|China|Czechia|Finland|France|Germany|Israel|Italy|Japan|Korea, Republic of|Mexico|Netherlands|Poland|Russian Federation|Spain|Sweden|Taiwan|United Kingdom 1
United States|Australia|Belgium|Brazil|Canada|Czech Republic|France|Germany|Hong Kong|Israel|Italy|Netherlands|Norway|Poland|Singapore|Slovakia|Spain|Sweden|United Kingdom 1
United States|Australia|Belgium|Brazil|Canada|Denmark|France|Israel|Korea, Republic of|Netherlands|Russian Federation|Spain|Sweden|Taiwan|United Kingdom 1
United States|Australia|Belgium|Brazil|Canada|Finland|France|Germany|Israel|Italy|Japan|Netherlands|Norway|Poland|Russian Federation|Singapore|Spain|Sweden|United Kingdom 1
United States|Australia|Belgium|Canada|Denmark|Estonia|France|Germany|Iceland|Israel|Netherlands|Poland|Puerto Rico|Russian Federation|Spain|United Kingdom 1
United States|Australia|Belgium|Canada|Denmark|Finland|France|Indonesia|Netherlands|Norway|Poland|Sweden|Switzerland|United Kingdom 1
United States|Australia|Belgium|Denmark|Finland|France|Italy|Slovakia|Spain|Sweden|United Kingdom 1
United States|Australia|Belgium|France|Germany|Italy|Singapore|Spain 1
United States|Australia|Belgium|Germany|Spain|Sweden|United Kingdom 1
United States|Australia|Brazil|Canada|Chile|Czechia|France|Germany|Israel|Italy|Korea, Republic of|Spain|Sweden|Taiwan|United Kingdom 1
United States|Australia|Bulgaria|Canada|Czechia|France|Greece|Hungary|India|Latvia|Mexico|New Zealand|Poland|Russian Federation|Slovakia|Slovenia|South Africa|Ukraine 1
United States|Australia|Canada|China|Germany|Ireland|Netherlands|United Kingdom 1
United States|Australia|Canada|Czech Republic|France|Hungary|Russian Federation|United Kingdom 1
United States|Australia|Canada|Ireland|New Zealand|United Kingdom 1
United States|Australia|Canada|Spain|United Kingdom 1
United States|Australia|Chile|France|Germany|Italy|Netherlands|Spain|United Kingdom 1
United States|Australia|Denmark|Germany|Korea, Republic of|Netherlands|Puerto Rico|Romania|Spain|United Kingdom 1
United States|Australia|Italy 1
United States|Australia|Italy|Korea, Republic of|Spain 1
United States|Australia|Peru|Puerto Rico 1
United States|Australia|Puerto Rico|Spain 1
United States|Austria 1
United States|Austria|Czech Republic|Germany|Hungary|Italy|Slovakia|Spain|United Kingdom 1
United States|Austria|Czechia|Germany|Lithuania|Poland|Slovakia|Taiwan 1
United States|Belgium|Canada|Czech Republic|Finland|Germany|Hungary|Mexico|Netherlands|Poland|Romania|Russian Federation|Ukraine|United Kingdom 1
United States|Belgium|Canada|Czechia|France|Italy|Netherlands|Poland|Russian Federation|Spain|United Kingdom 1
United States|Belgium|Canada|Denmark|France|Germany|Romania|United Kingdom 1
United States|Belgium|Canada|Denmark|France|Netherlands|Puerto Rico|Sweden|United Kingdom 1
United States|Belgium|Canada|Finland|Former Serbia and Montenegro|France|Germany|Netherlands|Romania|Russian Federation|United Kingdom 1
United States|Belgium|Canada|France|Israel|Italy|Spain|United Kingdom 1
United States|Belgium|Canada|France|Spain|United Kingdom 1
United States|Belgium|Canada|Hungary|Israel|Poland|Russian Federation 1
United States|Belgium|Canada|Italy|Netherlands|Puerto Rico|Russian Federation|Spain 1
United States|Belgium|Czech Republic|Hungary|Italy|Netherlands|Poland|Russian Federation 1
United States|Belgium|Denmark|Finland|Germany 1
United States|Belgium|Denmark|Hungary|United Kingdom 1
United States|Belgium|Denmark|Sweden|United Kingdom 1
United States|Belgium|Italy|Spain 1
United States|Belgium|Russian Federation|United Kingdom 1
United States|Brazil|Canada|Chile|Croatia|France|Peru|Romania|Russian Federation 1
United States|Canada|China|Israel 1
United States|Canada|Czech Republic|Hungary|Romania 1
United States|Canada|Czechia|Finland|France|Germany|Greece|Poland|Russian Federation|Slovakia|South Africa|United Kingdom 1
United States|Canada|Denmark|Norway|Portugal|Spain|Sweden|United Kingdom 1
United States|Canada|Finland|Hungary|Mexico|Poland 1
United States|Canada|France|Netherlands|United Kingdom 1
United States|Canada|France|United Kingdom 1
United States|Canada|Germany 1
United States|Canada|Germany|Netherlands|Spain 1
United States|Canada|Germany|Spain|Switzerland|United Kingdom 1
United States|Canada|Hong Kong|Israel|Singapore|Switzerland 1
United States|Canada|Moldova, Republic of|Netherlands|United Kingdom 1
United States|Canada|Netherlands|United Kingdom 1
United States|Canada|Sweden 1
United States|Canada|United Kingdom 1
United States|Czech Republic|Estonia|Finland|France|United Kingdom 1
United States|Czechia|France|Greece|Italy|Netherlands|Romania|Spain|United Kingdom 1
United States|Czechia|Korea, Republic of|Lithuania|Slovakia 1
United States|Estonia|Latvia 1
United States|Finland|Israel|Italy|Norway|Spain|Sweden 1
United States|Finland|Sweden|United Kingdom 1
United States|France 1
United States|France|Germany|Greece|Netherlands|Spain|United Kingdom 1
United States|France|Germany|Spain 1
United States|France|Italy 1
United States|France|United Kingdom 1
United States|Germany|Italy 1
United States|Germany|Poland|Spain 1
United States|Germany|United Kingdom 1
United States|Greece|Switzerland|United Kingdom 1
United States|Hong Kong|Korea, Republic of|Netherlands|Singapore|Spain|Taiwan|United Kingdom 1
United States|Hungary|Poland|Puerto Rico|Romania|Russian Federation 1
United States|Ireland 1
United States|Italy|Russian Federation|Spain 1
United States|Italy|United Kingdom 1
United States|Moldova, Republic of|South Africa 1
United States|Netherlands 1
United States|Portugal 1
United States|Russian Federation 1
United States|Singapore 1
United States|Spain|Argentina|Australia|Austria|Belgium|Canada|Chile|France|Germany|Italy|Netherlands|Poland|South Africa|United Kingdom 1
United States|Switzerland|United Kingdom 1
Venezuela 1
Vietnam 1

Sites per Study

Site_count Study_Count
1 1533
2 214
3 143
4 89
5 65
6 52
7 41
8 48
9 20
10 24
11 30
12 20
13 20
14 13
15 11
16 29
17 17
18 10
19 13
20 5
21 9
22 6
23 11
24 6
25 6
26 5
27 7
28 8
29 8
30 5
31 4
32 4
34 4
35 4
36 5
37 2
38 2
39 2
40 1
41 4
43 2
44 1
45 3
46 1
47 4
48 1
49 1
50 4
51 1
52 2
54 3
55 4
56 2
57 1
58 2
59 4
60 2
61 2
62 2
63 1
64 2
65 1
66 2
68 1
69 3
70 2
71 3
72 1
73 1
74 2
76 2
78 2
79 1
80 2
82 2
84 2
85 1
86 1
87 1
88 2
89 1
90 1
91 1
94 1
95 1
97 1
98 1
109 1
114 1
118 1
120 1
122 1
123 1
126 1
128 1
130 1
133 1
134 1
135 2
140 3
147 4
149 2
155 1
158 1
159 1
162 1
164 1
165 1
167 1
168 1
170 3
172 3
173 1
176 1
179 1
180 1
184 1
186 2
190 1
192 1
198 1
199 2
203 1
205 2
208 1
209 1
210 1
211 1
215 2
220 1
221 1
226 1
228 1
230 1
233 1
234 2
239 1
240 1
241 2
245 1
249 1
250 1
253 1
254 1
257 1
258 1
261 1
264 1
269 1
273 1
283 1
296 1
299 1
339 1
343 1
364 1
391 1
398 1
405 1
460 1
472 1
508 1
518 1
539 1
554 1
560 1
672 1
873 1
932 1
1328 1

Phase

Phase Study_Count
Phase 2 904
N/A 734
Phase 1 373
Phase 3 324
Phase 1/Phase 2 214
Phase 4 67
Phase 2/Phase 3 36
Early Phase 1 32

Number of Arms

Number_of_Arms Count_of_Studies
1 1127
2 944
3 160
4 81
5 17
6 21
7 7
8 7
9 2
10 1
11 1
12 1
18 1
37 1
NA 313

Number of Updates

Count of Versions Count of Studies
1 122
2 224
3 264
4 209
5 186
6 167
7 135
8 131
9 116
10 97
11 97
12 78
13 89
14 82
15 63
16 66
17 37
18 37
19 29
20 29
21 24
22 32
23 19
24 16
25 18
26 13
27 18
28 18
29 12
30 11
31 14
32 11
33 9
34 5
35 7
36 7
37 8
38 4
39 4
40 10
41 8
42 2
43 6
44 4
45 2
46 5
47 6
48 2
49 4
50 5
51 8
52 5
53 3
54 2
55 4
56 3
57 4
58 3
59 3
60 3
61 2
62 2
63 3
64 2
65 1
66 2
68 3
69 2
70 1
71 1
72 1
74 1
75 3
76 1
77 2
79 2
82 1
87 1
91 2
92 1
93 1
94 1
98 2
101 2
102 2
103 1
104 1
105 2
109 1
110 1
115 1
118 1
122 1
123 1
125 2
131 1
132 1
134 1
137 1
142 1
148 2
156 1
173 1
186 1
197 1
212 1
213 1
225 1
233 1
234 1
245 1
261 1
324 1
351 1
407 1
466 1
471 1
490 1
524 1
544 1
611 1
667 1
879 1
1200 1

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 40212 2562 15.695550
Contacts/Locations 19186 2259 8.493139
Recruitment Status 4171 2227 1.872923
Study Design 3609 1828 1.974289
Arms 3504 1384 2.531792
Interventions 3504 1384 2.531792
Eligibility 3261 1405 2.320996
Outcome Measures 2735 1391 1.966211
Study Identification 2689 1305 2.060536
None (earliest Version on record) 2684 2684 1.000000
Study Description 2457 1105 2.223529
Sponsor/Collaborators 2321 1309 1.773109
Oversight 1685 1186 1.420742
Conditions 1292 700 1.845714
References 1135 566 2.005300
More Information 901 302 2.983444
Results 434 434 1.000000
IPDSharing 330 299 1.103679
Baseline Characteristics 185 139 1.330935
Reported Adverse Events 142 122 1.163934
Participant Flow 131 114 1.149123
Results Submission Events 124 124 1.000000
Documents 111 104 1.067308
2020 Study Status 2 2 1.000000
2020 More Information 1 1 1.000000
2020 Outcome Measures 1 1 1.000000
Quality Control Review has not concludedReturned: April 10 1 1 1.000000
Quality Control Review has not concludedReturned: April 27 1 1 1.000000
Quality Control Review has not concludedReturned: March 27 1 1 1.000000
Quality Control Review has not concludedReturned: May 12 1 1 1.000000

Enrollment Metrics by Phase

Measure Early.Phase.1 N.A Phase.1 Phase.1.Phase.2 Phase.2 Phase.2.Phase.3 Phase.3 Phase.4
Min. 2.00000 2.0000 1.00000 8.00000 1.0000 36.0 3.0000 10.0000
1st Qu. 15.00000 30.0000 17.50000 25.00000 30.0000 83.0 188.0000 42.2500
Median 28.00000 69.0000 27.00000 44.00000 50.0000 137.0 397.0000 94.5000
Mean 35.15625 616.7975 42.86197 69.06161 205.6609 540.8 801.2984 156.1818
3rd Qu. 50.00000 205.2500 43.00000 80.00000 100.0000 291.5 984.0000 204.5000
Max. 146.00000 100000.0000 1200.00000 1084.00000 99999.0000 12200.0 35533.0000 1618.0000

Trial Group Type

group_type Group_Count
Experimental 3043
Active Comparator 648
NA 313
Other 211
Placebo Comparator 192
No Intervention 135
Sham Comparator 12

Intervention Model

intervention_model Study_Count
Single Group Assignment 1335
Parallel Assignment 1047
NA 134
Sequential Assignment 78
Crossover Assignment 58
Factorial Assignment 32

Primary Purpose

primary_purpose Study_Count
Treatment 1910
Diagnostic 320
Supportive Care 166
Prevention 104
Other 66
Basic Science 31
Screening 31
NA 28
Health Services Research 22
Device Feasibility 4
Educational/Counseling/Training 2

Observational Studies

Studies by Country

Country Study_Count
United States 197
Canada 39
NA 33
France 22
United Kingdom 20
Germany 12
Italy 10
Spain 10
China 9
Korea, Republic of 8
Netherlands 8
Taiwan 8
Japan 7
Norway 7
Switzerland 7
Denmark 6
Hong Kong 6
Sweden 5
Belgium 3
Brazil 3
Hungary 3
Ireland 3
Israel 3
Russian Federation 3
United States|Canada 3
Australia 2
Austria 2
Australia|Belgium|Denmark|France|Germany|Italy|Netherlands|Norway|Romania|Turkey|United Kingdom 1
Austria|Belgium|France|Germany|Greece|Italy|Netherlands|Poland|Romania 1
Austria|Denmark|Germany 1
Belgium|Czech Republic|Germany|Hungary|United Kingdom 1
Belgium|Denmark|Finland|France|Germany|Greece|Hungary|Ireland|Italy|Netherlands|Norway|Portugal|Slovakia|Switzerland|United Kingdom 1
Belgium|Luxembourg 1
Brazil|Algeria|Argentina|Australia|Austria|Canada|Colombia|Egypt|France|Germany|Indonesia|Israel|Italy|Korea, Republic of|Lebanon|Mexico|Netherlands|New Zealand|Oman|Peru|Philippines|Saudi Arabia|Singapore|Spain|Taiwan|Thailand|United Kingdom 1
Croatia 1
Czech Republic 1
Denmark|France|Latvia|Lithuania|Netherlands|Romania|United Kingdom 1
Denmark|France|United Kingdom 1
Finland 1
Finland|France|Germany|Italy|Netherlands|Spain|Sweden|United Kingdom 1
France|Austria|Belgium|Bulgaria|Czechia|Denmark|Germany|Greece|Hungary|Ireland|Italy|Netherlands|Portugal|Slovenia|Spain|United Kingdom 1
France|Guadeloupe 1
France|United States|Argentina|Canada|Chile|Finland|Germany|Greece|Netherlands|Spain|Sweden|United Kingdom 1
Ghana 1
Greece 1
India 1
Kazakhstan 1
Mexico 1
Poland|Ukraine 1
Portugal|Spain 1
Romania 1
Spain|Austria|Belgium|France|Germany|Israel|Luxembourg|Poland|Portugal|Russian Federation|Slovenia|Sweden|Switzerland|Turkey|United Kingdom 1
Turkey 1
United States|Argentina|Australia|Brazil|Canada|France|Israel|Korea, Republic of|Spain|Taiwan|Ukraine|United Kingdom 1
United States|Argentina|Austria|Belgium|Canada|Colombia|Czechia|Denmark|France|Germany|Greece|Israel|Italy|Luxembourg|Mexico|Netherlands|Portugal|Spain|Sweden|United Kingdom 1
United States|Finland 1
United States|Italy|Norway 1
United States|Mexico|Saudi Arabia 1
United States|Puerto Rico 1
United States|Spain 1

Sites per Study

Site_count Study_Count
1 331
2 25
3 21
4 8
5 8
7 7
8 4
9 4
10 6
11 1
12 1
13 2
14 2
15 2
17 1
18 2
20 3
23 4
24 1
25 1
26 2
27 1
31 1
32 3
33 2
34 1
35 1
36 2
40 1
41 1
44 1
47 2
49 1
50 1
52 1
63 1
72 1
93 1
118 1
135 1
143 2
147 1
148 1
160 1
161 1
182 1
216 1
231 1
267 1
333 1
453 1

Number of Updates

Count of Versions Count of Studies
1 47
2 73
3 49
4 37
5 36
6 34
7 20
8 26
9 17
10 12
11 15
12 11
13 11
14 11
15 6
16 6
17 7
18 2
19 1
20 2
21 2
22 5
23 3
24 2
25 3
26 1
27 3
28 3
30 1
31 1
32 1
33 2
35 2
38 1
40 1
49 1
50 1
56 1
58 2
63 1
67 1
68 1
69 1
71 1
74 2
80 1
96 1
97 1
102 1
164 1
250 1

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 4396 425 10.343529
Contacts/Locations 1594 346 4.606936
Recruitment Status 567 332 1.707831
Study Design 534 306 1.745098
None (earliest Version on record) 472 472 1.000000
Study Description 421 133 3.165414
Eligibility 354 170 2.082353
Sponsor/Collaborators 273 179 1.525140
Study Identification 251 150 1.673333
Outcome Measures 242 164 1.475610
Groups 234 141 1.659574
Interventions 234 141 1.659574
Oversight 174 141 1.234043
Conditions 142 84 1.690476
References 109 72 1.513889
IPDSharing 51 47 1.085106
Results 12 12 1.000000
Documents 7 7 1.000000
More Information 7 7 1.000000
Results Submission Events 7 7 1.000000
Participant Flow 1 1 1.000000

Enrollment Metrics

Measure Observational
Min 1.000
1st Qu 59.000
Median 198.000
Mean 1200.032
3rd Qu 628.000
Max 96000.000

Observation Model

observational_model Study_Count
Cohort 271
Case-Only 101
NA 30
Case-Control 28
Other 18
Case Control 12
Ecologic or Community 5
Case-Crossover 3
Defined Population, Natural History 2
Defined Population 1
Family-Based 1

Time Perspective

time_perspective Study_Count
Prospective 341
Retrospective 80
Cross-Sectional 21
NA 19
Other 8
Longitudinal, Prospective 1
Longitudinal, Retrospective 1
Longitudinal, Retrospective/Prospective 1

Registries

Studies by Country

Country Study_Count
United States 15
Netherlands 5
France 2
Japan 2
Korea, Republic of 2
Luxembourg 2
NA 2
Argentina 1
Belgium 1
China|India|Japan|Korea, Republic of|Malaysia|Singapore|Taiwan|Thailand 1
Colombia 1
Hong Kong 1
Ireland 1
Italy 1
Norway 1
Spain 1
Sweden 1
Switzerland 1
United States|Australia|Brazil|Canada|Ireland|Spain|Sweden|Switzerland|United Kingdom 1
United States|Canada|Lithuania 1

Sites per Study

Site_count Study_Count
1 26
2 2
3 4
5 1
8 1
10 1
11 1
12 2
25 1
32 1
40 1
76 1
77 1

Number of Updates

Count of Versions Count of Studies
1 6
2 8
3 9
4 3
5 2
6 4
7 2
8 1
10 2
13 1
16 1
22 1
26 1
33 1
50 1

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 254 37 6.864865
Contacts/Locations 134 32 4.187500
None (earliest Version on record) 43 43 1.000000
Recruitment Status 39 29 1.344828
Study Design 26 20 1.300000
Eligibility 11 9 1.222222
Groups 9 7 1.285714
Interventions 9 7 1.285714
Outcome Measures 9 7 1.285714
References 8 6 1.333333
Study Identification 8 6 1.333333
Oversight 7 6 1.166667
Study Description 7 6 1.166667
Sponsor/Collaborators 6 3 2.000000
Conditions 2 2 1.000000
IPDSharing 2 2 1.000000

Enrollment Metrics

Measure Registries
Min 39.000
1st Qu 237.000
Median 693.000
Mean 2190.442
3rd Qu 2000.000
Max 15000.000

Registry Model

observational_model Study_Count
Cohort 37
Case-Control 3
Case-Only 3

Time Perspective

time_perspective Study_Count
Prospective 38
Other 4
Cross-Sectional 1

Follow-up

target_duration Study_Count
10 Years 8
3 Years 7
5 Years 7
1 Year 4
36 Months 3
1 Month 2
2 Years 2
3 Months 2
6 Months 2
11 Years 1
15 Years 1
24 Months 1
4 Months 1
7 Days 1
8 Years 1